Combination or key operable door lock



Jan. 1, 1952 s. PELLE COMBINATION OR KEY OPERABLE DOOR LOCK Filed Nov. 12, 1948 8 Sheets-Sheet l INVENTOR. STEPHEN PELLE Jan. 1, 1952 s, PELLE COMBINATION OR KEY OPERABLE DOOR LOCK 8 Sheets-Sheet 2 Filed Nov. 12, 1948 INVENTOR.

STEPHEN PELLE Jan. 1, 1952 s. PELLE 2,580,830

COMBINATION OR KEY OPERABLE DOOR LOCK Filed Nov. 12, 1948 8 Sheets-Sheet 5 z 86 ml 8 I 20 s. PELLE 2,580,330

COMBINATION OR KEY OPERABLE DOOR LOCK Jan. 1, 1952 Filed Nov. 12, 1948 8 Sheets-Sheet 4 Jan. 1, 1952 s. PELLE COMBINATION OR KEY OPERABLE DOOR LOCK 8 Sheets-Sheet 5 Filed Nov. 12, 1948 nvmvrm STEPHEN PELLE lflv Jan. 1, 1952 s. PELLE 2,580,830

COMBINATION OR KEY OPERABLE DOOR LOCK Filed Nov. 12, 1948 8 Sheets-Sheet 6 INVENTOR. STEPHEN PELLE Jan. 1, 1952 s. PELLE ,580,

COMBINATION OR KEY OPERABLE DOOR LOCK Filed Nov. 12, 1948 8 Sheets-Sheet '7 n31 I5 s4----- I 5 26 l u INVENTOR. STEPHEN PELLE Patented Jan. 1, 1952 CONIBINATION OR KEY OPERABLE DOOR LOCK Stephen Pelle, New York, N. Y.

Application November 12, 1948, Serial No. 59,650

'18 Claims. 1

This invention relates to new and useful improvements in a lock.

More specifically, the present invention relates to a new and improved lock characterized by the fact that the bolt thereof may be selectively secured in a locking position by one of two mechanisms, one of which is operable to open the look by manipulation of push buttons in accordance with a predetermined combination and the other of which is operable to open the look by means of an insertable key.

A further object of the present invention proposes so arranging the push button mechanism that the push buttons thereof may be manipulated from either side of the lock body, and more particularly the door to which thelock is attached, in a manner to permitthe push button mechanism to be used for opening the look from either side of the door.

Still another object of the present invention proposes so arranging the key mechanism that it terminates in a key hole opening on the outer side of the lock body and more particularly on the outer side of the door to which the lock is attached, in a manner so that the mere insertion of a key of novel design into the key holeopening will release the bolt of the lock.

Another object of the present invention ;proposes providing the lock with a plurality ofrotatively mounted ratchet wheels each having a corresponding push button-and arranged to be rotated through a predetermined portion of a complete revolution by its corresponding push button in a manner to move the ratchet wheels to a position in which the bolt of the lock will be freed.

Still further, the present invention proposes so constructing the push buttons that they may be used for rotating their respective ratchet wheels through a distance equal to one tooth of the ratchet wheel or five teeth of the ratchet wheel for each manipulation of the push buttons.

Still another object of the present invention proposes the provision of a separate resiliently biased dog for holding each of the ratchet wheels in their rotated positions with a means controlled by axial movement of the door knob rod for moving the dogs to positions in whichthe ratchet wheels will befreed to be returned to their-starting positions by self-contained resilient means.

Still further, the present invention proposes the provision of an emergency device arranged in a manner to permit the bolt to be quickly released from the inside of the door regardless of whether the door is locked by the push button 2 mechanism or the key mechanism in times of emergency, such as fires and the like.

In accordance with a modification of the pres-- ent invention it is proposed to connect certain of the push buttons in a manner so that move- I ment of either of the connected push buttons will cause the connected pair to move in unison to rotate their respective ratchet wheels.

The present invention also proposes a novel combination arrangement for the modification referred to in the preceding paragraph whereby manipulation of the connected push buttons will move their ratchet wheels in a direction to free the bolt and manipulation of an adjacent independent push button to move its ratchet wheel in a direction to free the bolt, will automatically release the ratchet wheel of the adjacent push button of the connected pair in a manner to free that ratchet wheel to be returned to its starting position so that upon further manipulation of the connected push buttons the respective ratchet wheels will again be moved in unison but in staggered positions with relation to each other.

It is-a further object of the present invention to construct a new and novel lock which is simple and durable, which is positive and foolproof in operation and which may be manufactured and sold at a reasonable cost.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is an outside elevational view of a portion of a door provided with a lock in accordance with the present invention.

Fig. 2 is a view similar to Fig. 1, but illustrating the lock viewed from the inside of the door.

Fig. 3 is an end elevational view looking in the direction of the line 3-3 on Fig. 1.

Fig. 4 is a vertical sectional view of a portion of the door taken on the line 4-4 of Fig. 1 and looking at the opposite end of the look from that seen in Fig. 3.

Fig. 5 is an enlarged vertical sectional view taken substantially on the line 5--5 of Fig. 3.

Fig. 6 is a vertical sectional view taken substantially on the line 6-6 of Fig. 5.

Fig. 7 is a horizontal sectional view taken substantially on the line 1--'| of Fig. 6.

Fig. 8 is a partial vertical sectional view taken substantially on the line 8-8 of Fig. 6.

Fig. 9 is an enlarged partial vertical sectional view taken substantially on the line 99 of Fig. 5.

Fig. 10 is a partial vertical sectional view taken substantially on the line ||0 of Fig. 9.

Fig. 11 is a partial horizontal sectional view taken substantially on the line of Fig. 10.

Fig. 12 is a partial vertical sectional view taken substantially on the line |2-|2 of Fig. 10.

Fig. 13 is a partial end elevational view looking in the direction of the line |3|3 on Fig. 5.

Fig. 14 is a partial vertical sectional view taken substantially on the line i4-|4 of Fig. 5.

Fig. 15 is a perspective View of the operating tool, per se.

Fig. 16 is a partial end elevational view looking in the direction of the line |6|6 on Fig. 5.

Fig. 1'7 is a partial vertical sectional view taken substantially on the line of Fig. 5.

Fig. 18 is a partial vertical sectional view taken substantially on the line |8-|8 of Fig. 6.

Fig. 19 is a diagrammatic view of the four ring members and their respective latch members.

Fig. 20 is a partial vertical sectional view taken substantially on the line 2025 of Fig. 6.

Fig. 21 is an enlarged vertical sectional view of a portion of the key mechanism taken on the line 2 |-2| of Fig. '7.

Fig. 22 is a plan view of the key, per se.

Fig. 23 is an enlarged sectional view taken on the line 23-23 of Fig. 22.

Fig. 24 is a partial horizontal sectional view taken substantially on the line 2424 of Fig. 8.

Fig. 25 is a view similar to Fig. 24, but illustrating a different position of the parts.

Fig. 26 is a vertical sectional view of one of the internal push buttons, per se, taken on the line 26-46 of Fig. 12.

Fig. 27 is a perspective view of one of the internal push buttons, per se.

Fig. 28 is a view similar to Fig. 5, but illustrating the lock constructed in accordance with a modification of the present invention.

Fig. 29 is a partial vertical sectional view taken on the line 2929 of Fig. 28.

Fig. 30 is a perspective view of one of the dogs, per se, used in the form of the invention illustrated in Fig. 28.

The lock, in accordance with the first'form 0f the invention shown in Figs. 1 to 2'7, includes a casing 50 shown on the drawings attached to a portion of a door The casing 50 slidably supports a bolt 52 for movement in a direction laterally thereof. The bolt 52, as in conventionally constructed locks is arranged to cooperate with a complementary keeper (not shown) mounted on the door jamb (not shown) for looking the door 5| in a closed position, as is generally known in the art. Further details re garding the keeper will not be given in this specification, as suchdetails form no part of this invention, it being deemed sufficient to say that any keeper which will receive the projected end of the bolt 52 is adequate for purposes of the present invention.

The casing 59 includes a main rectangular portion 50a and an integral smaller square portion 50 The main rectangular portion 55 extends along the inside face of the door 5| and the smaller square portion 55 is projected through a complementary opening 5| formed in the door 5|. The portions 5|] and 50 of the casing 50 are open from end to end, and the main rectangular portion 52) is closed by a plate 53 secured in position by four screws 54. Likewise, the end of the portion 50 is closed by a plate 55 held in position by four screws 56. Mounted on the outside of the door 5| and surrounding the plate 55, there is a further finishing plate 5? held in position by four wood screws 58 screwed into the surface of the door 5|.

The bolt 52 comprises a portion 52 rectangular in cross-section and an integral portion 52 which is circular in cross-section. The rectangular portion 52 of the bolt 52 is slidably extended through a complementary opening 59 in the side wall of the casing 55 adjacent the vertical edge of the door 5| for engagement with the keeper- (not shown), previously referred to. The free end of the circular portion 52 of the bolt 52 is freely slidably extended through a complementary circular opening 60 formed in the opposite side wall of the casing 50.

' Rotatively mounted on the circular portion 52 of the bolt 52, there are four sleeves 5 The side of the sleeve 6| adjacent the rectangular portion 52 of the bolt 52 abuts the rectangular portion 52 and pins 62 are disposed between the adjacent edges of adjacent sleeves and against the end of the sleeve at the end of the bolt 52 opposite the rectangular portion 52. The pins 62 are fixedly extended diametrically through the circular portion 52 of the bolt 52 and act to prevent axial movement of the sleeves 6| on the circular portion 52. while leaving the sleeves free for rotative movement. Each of the sleeves 6| is formed with a laterally projecting lug 63 normally in abutment with the adjacent end of the respective pin 62 for limiting rotative movement of the sleeves 6| to one direction only.

Resilient means is provided for retaining the sleeves 6| in positions in which their lugs 63 will be in abutment with the ends of their respective pins 62. This resilient means comprises a contraction spring 64, see Fig. 6, for each of the sleeves 6|. Each spring 64 has one end attached to a pin 65 extending from the lug 63 of its respective sleeve 6| and its other end attached to a second pin 66 extending from the end of the respective pin 62. The springs 64 thus act to retain the sleeves 6| in a rotative position in which their lugs 63 abut the adjacent ends of the pins 62.

Extending substantially vertically upwards from each of the sleeves 6| there is a finger 61. These fingers abut the sides of ratchet wheels 68 mounted on a shaft 69 mounted between the side walls of the rectangular portion 5|! of the casing 50. When the ends of the fingers 5! abut the ratchet wheels 68 they retain the bolt 52 in a position in which the rectangular portion 53 of the bolt 52 is extended from the side of the easing 50 in locking position, as shown in Figs. 1, 2 and 5, against the action of a resilient means which exerts a force tending to draw the bolt 52 into a position retracted into the casing 50. This resilient means comprises a contraction spring 10 having one end attached to a pin 1| projecting from the circular 52 of the bolt 52 and its other end attached to a lug I2 mounted on an adjacent side wall of the casing 50.

As illustrated in Fig. 5, there is a finger 6! for each of the ratchet wheels 68, making four fingers 61 and four ratchet wheels 68. Each of the ratchet wheels 68 is alike in construction and each includes a tubular portion 68 rotatively engaging the shaft 69. The peripheries of the ratchet wheels are formed with the usual ratchet teeth and the sides thereof adjacent the tubular portions 68 are formed with circular groups of teeth 13. More particularly, the periphery of each of the ratchet wheels 68 is formed with 39 ratchet teeth and a cutout portion T4, see Figs. 6and 9, of awidth to permit theend of the respective finger 6'! to pass therethrough, when the ratchet wheels 68 have been rotated to a position in which the cutout portions 14 are aligned with the free upper ends of thefingers 61. This frees the bolt 52, as will become clear as this specification proceeds, for movement in a direction to withdraw the rectangular portion 52 into the casing 50.

The periphery of the shaft Ellis formed with a plurality of serrations l5, preferably twenty in number; however, the shaft should be formed with forty longitudinal serrations corresponding to the number of ratchet teeth on the periphery of the ratchet wheels -68. Stops l6 areengaged on the-shaft 69, between'adjacent ratchet wheels 68 and at each end of the group of four ratchet wheels. These steps 16 are formed with internal serrations complementary to the serrations 15 of the shaft 69 for retaining the stops against rotative motion on the shaft 69. These stops it are engaged upon the shaft '69 with a force fit, so that they will be retained against longitudinal movement on the shaft. Each stop 16 has its end adjacent the side of one-of the ratchet wheels t3 namely, the side opposed to the side formed with the tubular portion 68 extended into a recess 11 formed in the side of the ratchet wheel 68.

Within the recesses 11, the stops it are formed with projecting lugs 18 engaged by lugs 19 projected radially into the recess H from the ratchet Wheels 68, see Figs. 6 and 9. This engagement of the lugs 18 and I9 limits rotation of the ratchet wheels 68 to one direction only, and adjustment of the stops it on the shaft 68 changes the combination of the look by varying the spacing of the cutout portions 74 and the free upper ends of the fingers 61, thus 'efiecting the number of ratchet teeth the ratchet wheels I38 must be advanced in order to align'the cutout portions M with the free upper ends of the fingers 67.

Rotative means is provided for retaining the ratchet wheels 68 in a position in which the lugs 18 and 19 will be in facial engagement and the cutout portions 14 will be spaced from the free upper ends of the fingers Bl securing the bolt 52 in its extended door locking position. This resilient means comprises a coil spring 80 wound about the tubular portion 63 of each of the ratchet wheels 68 and having oneend attached to the respective ratchet wheel 63 and its other end projected through an opening in an overhanging portion lfi 'of the adjacent stop 76. This connects the other ends of the coil springs '80 to the stops l6 and as the ratchet wheels 68 are rotatively mounted on the shaft 69 andthestops is are fixedly mounted thereon against rotative motion, by reason of their interengagement with the serrations 15 on the periphery of the shaft 69, the coil springs 8i! exert a force tending to retainthe lugs 18 and T9 in facial contact.

Push button means isprovided for advancing the ratchet wheels 58 a desired number of ratchet teeth in accordance with a predetermined combination for aligningthe cutout portions is of the ratchet wheels '58 with the free upper ends of the fingers 6i tofree the bolt '52 to be retracted into the casingEil by the spring Hi.

This push button means is characterized by a ring 8! rotatively retained upon the tubular portion 68 of each of the ratchetwheels 88 by means of a circular flat member 82 held'in position by several removable bolts 83, see'Fig. 10. It -is the circular flat'member 82 which isalsolformed with an opening into which the adjacent end oi the coil spring 80, o'f-each of the ratchet wheels 68, extends for anchoring the adjacent end to the ratchet wheel '68. A rod-like member 84 extends vertically upwards from each of the rings 8|,and a spur gear 85 is rotativelyengaged upon :each of the rod-like members 84 and each spur gear 85 meshes with the teeth 73 formed on the side of the adjacent ratchet wheel 68. Whenthe rings 8| are turned, the spur gears 85 merely rotate upon their respective rod-like members 84 and their 'teethmerely idle over the teeth 13 of the ratchet wheels 68. On the other hand, when the spur gears 85 are locked against rotation, which will become clear as this specification proceeds, and the rings 8! are rotated, the teeth of the spur gears 85 will no longer ride over the teeth ?3 of the ratchet wheels, but the spur gears 85' will be locked to the teeth '13 of the ratchet wheels 68 causing the ratchet wheels to be turned away from the lugs 18 of the stops it and against the action of the coil springs 88.

A cap seas engaged over the top end of each of the-rod-like members as above the spur gears 8-5 and each cap is 'retained'against rotation by means of an internal key 81 which engages a complementary keyway '88 formed on the side of the respective rod-like member 8%. Each cap 86 above the top end of the respective rod-like memher-8e is formed with a tubular passageway 89, see Figs. 9, l0 and 12, extended from side to side thereof. A latch member 9% has a horizontal portion 9i extended through the passageway -89 and pivotally supported on a pin e2 extended across the passageway 89. The latch members 98 further include depending portions 93 which in pivoted position of the latch members 98; are adapted to have their lower ends engage between adjacent teeth of thespur gears 85 and retain the spur gears against rotation upon the rodlike members 8d as previously referred to.

Each of the latch members 9% at the junction of the horizontalportions :9! with the depending portions 93 is formed with a projecting stud 94. A contraction spring 95 has one'end attached to the stud st of the respectiye latch member 99 and its other end attached to a pin 95 mounted on the top portion of the respective cap to for retaining the latch members 9!! in a position in which the lower ends of their depending portions p 33 will be disengaged-from the teeth of the spur gears '85.

A stem El extendsfrom the side of each of the caps 86 and is adapted to enter an elongated opening 98 formed in the depen'ding portion 93 of the respective latch member as for retaining the latch members so against possible sidewise play in their pivoted positions.

There is a push button rod 59 for each of the ratchet whels ee fourpush button rods in all. These push button rods 29 are extended through the casing 58 and'have their ends slidably projected through the plates 53 and dfi. The .platefifi is formed with a centrally located tubular boss '8 iii! and the adjacent ends of the push buttonirods 9B are shaped so that these ends reject from the plate 55 arranged in acircular group'about the tubular boss, see Fig. 1.

Intermediate of their ends, each of the push hutt'onrods 99 is formed with a laterally extending projection it! engaging the side of the 'respective latch member 99. Thus, when the push button rods 99 are moved in a direction to move the projections IOI against the latch members 90, the projections "II will first pivot the latch members 90 against the action of the springs 95 to engage the lower ends of the depending portions 93 of the latch members between the teeth of the spur gears 85 and secure the spur gears 85 against rotation, so that continued movement will turn the rings BI and the ratchet wheels 68 about the shaft 99.

The ends of the push button rods 99 grouped about the tubular boss I are formed with projecting push buttons I02. Each of the push but tons I02 has a high part I03 adapted to be aligned with the outer end of the tubular boss I 08 and a low part I04 adapted to be aligned with the face of the plate 55 about the tubular boss I00. If the operators finger is applied to the high part I03 and the push button I92 pushed inward until the finger strikes the outer end of the tubular boss I00, the push button rod 99 will be advanced to move the corresponding ratchet wheel 68 away from the lug 78, a distance equal to one ratchet tooth. On the other hand, if the operator's finger is applied to the low part I04 of the push button I02 and the button pushed inward until the finger abuts the face of the plate 55, the push button rod 99 will be advanced to move the corresponding ratchet wheel 68 away from the lug 78, a. distance equal to five ratchet teeth.

The ends of the push button rods 99 extended through the plate 53, are arranged in a horizontal row, as shown in Fig. 2. These ends project through the plate 53 and are providedwith pull buttons I05 for opening the door 5! from the inside. Each of these pull buttons 85 is alike in construction and is securely attached to its respective push button rod 99 by means of a set screw I06, see Figs. 9 and 12.

As in the case of the push buttons I52, the

pull buttons I05 are likewise provided with means for controlling movement of the push button rods 99 to advance the respective ratchet wheels one tooth or five teeth, as desired. In the case of the pull buttons I05, this control means includes a portion I01 integrally formed with each of the pull buttons I05 and extended through the plate 53 and along the top face of the respective push button rod 99. The inner end of each of the portions I0! is formed with an upstanding flange I08 which, when the pull button is completely pulled out, is adapted to strike the inside face of the plate 53 and limit movement of the push button rod 99 to a distance to advance the respective ratchet wheel 68 a distance equal to five teeth.

The top of each of the pull buttons I05 is formed with a recess I09, see Figs. 12, 26 and 27, and a lever H0 is disposed in the recess I09 and pivotally supported intermediate of its ends by a pin III extended across the recess I09. The inner end of each of the levers I I5 is formed with a stop II2 having its top end fiush with the top face of the portion I01 of the pull button I05, so as not to interfere with outward pulling of the pull button to advance the ratchet wheels 68 five teeth. The outer ends or the levers I19 are formed with projecting finger portions I I3 which are arranged to be manually depressed for purposes of extending the free ends of the stops I I2 above the top face of the portion I01 of the pull buttons I95 to strike the inside face of the plate 53 and limit outward pulling of the pull buttons I05 to a distance to advance the respective ratchet teeth 68 one tooth.

An expansion coil spring H4 is disposed within an opening II5 which extends downwards from the base of the recess I09 of each of the pull buttons I05. These expansion coil springs II4 operate between the base of the openings I I5 and the bottom face of the finger portion end of the levers IIO for retaining the stops retracted into the recess I09 and the stop ends of the levers I I0 seated against shoulders II6 formed within the recesses I09.

Resilient means is provided for retaining the push button rods 99 in a retracted position in which the pull buttons I05 will be in facial contact with the outside face of the plate 53 and the lateral projections IOI will be engaging the sides of the depending portions 93 of the latch members 90, as shown in Figs. 6, 7 and 12. This resilient means comprises a contraction spring Ill for each of the push button rods 99, within the square portion 50 of the casing 50 and operating between a lug II8 extending from the top face of the respective push button rod 99 and a complementary lug II9 mounted on the inside face of the plate 55.

A further resilient means is also provided for retaining the rings 8| in a rotative position, relative to their respective ratchet wheels 68, in which the latch members 90 will bear against the sides of the lateral projections IOI of the push button rods 99. This resilient means comprises a contraction spring I20 for each of the rings 8I operating between a depending lug I2I on the top wall of the casing 50 and a lug I22 extending from the side of a flange I23 which projects radially from the side of the respective ring BI, see Fig. 12.

It is appreciated of course that the spring 95 exerts a force greater than the spring I20, so that the spring 95 is capable of overcoming the force exerted by the spring I 20 retaining the latch members 90 in pivoted position relative to their respective caps 86 in which the free lower ends of the depending portions will be disengaged from the teeth of the respective spur gears when the latch members engage the lateral projections IIlI in the retracted positions of the push button rods 99, as shown in Figs. 9 and 12. Likewise, the coil springs 80 which hold the ratchet wheels 68 in a position in which their lugs I9 bear against the lugs I8 cf the stops 15 exert agreater pressure than the springs 95, so that when the push button rods 99 are pushed to rotate the ratchet wheels 08, the latch members 90 will be pivoted to their operative positions before the ratchet wheels 68 start to turn against the action of their respective coil springs 80. The engagement of the lugs I8 and I0 prevent the coil springs 89 from overcoming the force of the springs in the idle position of the ratchet wheel 68 and pivot the latch members 90 to a position in which the lower end of the depending portions 91 will be engaged with the teeth of the spur gears 85 in the position of the parts shown in Fig. 9. v

Releasable means is provided for holding the ratchet wheels 68 in rotative positions against the action of their coil springs 80. This releasable holding means comprises a rod I24 extended between the sides of the casing 50 and dogs I25 rotative on the rod I24-there being one dog I25 for each of the ratchet wheels 68. The dogs I25 are retained in aligned positions with their respective ratchet wheels 98 between pairs of collars I26 fixedly mounted on the rod I2 1. The collars I 26 leave the dogs I25 free to rotate. The upper ends of the dogs I25 are formed with teeth I21 engageable with the teeth of the respective ratchet; wheels... 68 and he. teeth. ar 1 ranged to. permit free rotation. of the ratchet wheels 88 in on direction while limiting their rotation in the reverse direction,

Each of. the ogs I2,5.has a d pendin l D I- tion I28, see Fig. 6, having a recessed portion I29, see Fi s. Gandtfl. A contraet en ri g 9 has ts ends attached to luss i3 ex end n rom th end walls ofv the asin .50. The sprin flie tends through all of the recessed portions I29; of the dogs I25 and retains the d gs I25 in a rotative position in which heteeth 2 cnthe op nds will be enga ed with the teeth of the ratchet wheels 68.

Means is provided for simultaneously pivoting all ofth oes eainst he ct on of; t ir holding spr n I31? to d n a e. th t et 121 of the do s I from h p rip ral ratchet teeth of the ratchet wheels 56 freeing the ratchet wheels to be returned to their starting position y th co l spr s 8 his. m an e rites a d or no rod 32. ext nde th ou h ali ned pen n s fo n. he plate the, rear l f th s n 5 th do 5! heii ish ne p at s e i 6 Th xt n ed po ions o door knob rod I32 are provided with the usual door knobs I33 secured in place by removable pins I35, see Fig. 6, having a forced fit in the door knobs I33 and the adjacent ends of the door knob rod I32. In the normal position of the door knob rod I32, shown in Fig. 6, the door knob I33 at the end of the door knob rod I32 adjacent the finishing plate 51 is spaced slightly from the adjacent face of the finishing plate 51 to have a slight longitudinal movement in addition to the usual rotative movement. Thus, from the outside of the door 5!, the door knob rod I32 may be pushed longitudinally inwards until the door knob strikes the face of the finishing plate 51.

A U-shaped bracket I35 has the ends of its vertical arms pivotally attached to the side walls'of the casing 50 by means of rivets I36 permitting pivotal movement of the bracket I35. The intermediate arm of the U-shaped bracket I35 extends horizontally along the depending tail portions I28 of the dogs I25. intermediate arm of the U-shaped bracket I35 engages the sides of the tail portions I28 opposed to the side formed with the recessed portions I29 within which the spring I30. is engaged. A fan-shaped member I31, see Fig. 6, extends susbtantially vertically from the door knob rod I32 and bears against the side of the intermediate arm of the U-shaped bracket I35 in all turned positions of the door knob rod I32, and when the door knob rod I32 is slid longitudinally, the fanshaped member I3! pivots the U-shapedbracket I35 which in turn pivots all of the dogs I25 against the action of the spring I30 to disengage the teeth I2! of the dogs I25 from the peripheral ratchet teeth of the ratchet wheels 68 freeing the ratchet wheels to be turnd back by their coil springs 80.

The door knob rod I32 also carries a gear I38, see Figs. 5 and 6, which is in mesh with rack teeth I39 formed on a portion of the circular part 52 of the bolt 52. Thus, the door knob rod I32 may be rotated to extend the rectangular portion 52 of the bolt 52 from the side of the casing 55 against the retaining action of the spring It. The rack teeth I39 are exposed at the bot tom of the bolt 52 by cut away portions of certain of the sleeves BI and the gear I38 is of a length to mesh with the rack teeth I39 in all lon- More particularly, the

10 itudinal sh f d o i ns f t e. eer knel re 32... lhe slee s i hieh are ut away. re on y. t wa t a d sr e e allow ree r ative mo ement of these leeves; on th ircu r rtion. 52? of e t .2. i he t n ri r n e om he ack tee I a l ver is pivotally m unte s lower end y ns or a p n 1 t n de a e the plate 53 adjacent the side of the door knob rod I 3 2. The top end of the lever I39 is provided with a laterally extending stem I4I frictionally extended through an arcuate slot I42 formed the plate 53. The outer end of the stem I.4I is provided with a knob I53 which is adapted to be manual y g e o v n e lever '3 i one di tt en er he herhe are a s ot 2 arranged ee een e w h h p c I which pivotally supports the bottom end of the lever 3 Th dee ne r d 2 is t rmed th a eular. nge I44 b h nd h h t e lever .3. i ens eabl n on o ts eted i n the ull. line s io show h m re nin the d r. no e 32. ins longitudinal mevem ht- When t e e I5 is p e to th do and dash line shown at I39 in Fig. 18, the lever is disengaged from behindthe circular flange I44 and the door knob rod I32 is free to be moved longitudinally.

The shaft 69 is formed of separate sections arranged in end alignment and the adjacent ends of the sections are connected for rotative movement relative to eachother. This means cornprises a reduced portion I45 formed on one of the sections of the shaft 69 and engaging a complementary opening I46 formed in the otherof the sections. Each of the sections of the shaft 69. carries two ratchet wheels 68 and related parts, and if desired a partition could be formed within the casing 50 for assisting in Supporting the rotatively interconnected ends of the sections of the shaft 69.

The outer ends of the sections of the shaft 69 are provided with small knobs I41 fixedly mounted on those outer ends and located within-shallow recesses I48 formed in the side walls of the casing 50, see Figs. 3, 4, 5 and 13. The knobs I4] are formed with projecting pointers I49 arranged to register with scales I50 formed on the side walls of the casing 50. By turning the knobs I41 the sections of the shaft 69 will be rotated relative to each other to turn the stops I6 and more particularly, the lugs 13 of those stops relative to the fixed upper ends ofthe fingers 67. As the coil springs 30 retain the ratchet wheels 68 in a rotative position in which their lugs 19 will bear against the lugs I8 of the stops I6, it is appreciated that movement of the stops I6 will cause a corresponding change in the positionof the ratchet wheels 68 to adjust the position of their cutout portions 14 with relation to the fixed upper ends of the fingers 6]. The net result is a change in the combination required tive ratchet wheels 68 depending upon the di-' rection in which the sections of the. shaft 69 are rotated.

Means is provided for releasably retaining the. sections of the shaft 69 in desired relative rotative positions with relation to each other. Thisreleasably retaining means comprises a gear purposes, 'when desired.

II mounted on the end of each of the sections of the shaft 69 in facial contact with the inside faces of the side walls of the casing 50. Each of the gears I5I has teeth corresponding in number to the number of serrations 15 formed on the shaft 69. A flat plate I52 is positioned for vertical movement relative to each of the gears I5I, between a pair of guide flanges I53 formed on the side walls of the casing 50. Headed pins I54 extend from each of the side walls of the casing and pass through elongated slots I55 formed in the plates I52 for retaining the plates I52 in position between the guide'flanges I53. The bottom edge of each plate I52 is formed with a single depending tooth I56, see Fig. 14, engaged between adjacent teeth of the gears I5I to hold the gearsand in turn the sections of the shaft 69 against rotation.

A small stud shaft I51 is turnably extended through each side wall of the casing 50 and is formed at its inner end with a cam I58. The cams I58 are disposed within complementary cam openings I59 formed in the plates I52. When the cams I58 are in the position shown in Fig. 14, they retain the plates I52 in a position in which the single tooth I56 of each of the plates will be in its operative position between adjacent teeth of the respective gear I5I.

The outer ends of the stud shafts I51 are provided with heads I59, see Figs. 5 and 13, located within recesses I60 formed in the outer faces of the side walls of the casing 50. Each head I59 is formed with spaced openings I6I adapted to be engaged by complementary spaced pins I62 formed on a turning tool I63, see Fig. 15. When the pins I62 of the turning tool I63 are engaged with the openings IBI of either of the heads I59, that head may be rotated through 180 degrees to similarly rotate the respective cam I58 and lift the respective plate I52 and disengage its tooth I56 from the teeth of the respective gear I5I freeing the gear and in turn the section of the shaft 69 upon which the gear is mounted for rotation by turning the respective knob I41. To relock the sections of the shaft 69 against further rotation when the desired adjustment has been made, the heads I59 are rotated again through 180 degrees back to their starting positions to turn the cams I58 and lower the plates I52 and reengage their teeth I56 with the teeth of the respective gears I5I.

Means is provided for selectively rendering any of the fingers 61 and related ratchet wheels 66 and related parts inoperative for bolt locking This is particularly important if any of the ratchet wheels 68 should become jammed or inoperative for any reason, as it permits the jammed ratchet wheel to be rendered inoperative without effecting the operation of the remaining ratchet wheels 68 or the operation of the look.

This means is characterized by a shaft I64, see Figs. 5 and 6, extended between the side walls of the casing 50. One end of the shaft I64 is rotatively supported in a bearing I65 on the inside of the adjacent side wall of the casing 50, below the opening 60 through which the end of the circular portion 52 of the bolt 52 slidably extends. The opposite end of the shaft I64 is rotatively extended through the opposite side wall of the casing 50, see Figs. 5, 16 and 1'1, and is provided with a, small knob I66 located within a shallow recess I81 formed inv the adjacent side wall of the casing 50.

Within the casing 50, the shaft I64 is formed with four longitudinally spaced triangular pro-' jections I68 staggered about the periphery of the shaft I64 at degrees from each other. These triangular projections I68 are arranged to engage depending arms I69 which extend from each of the sleeves 6I in spaced positions corresponding to the longitudinal spacing of the triangular projections I68 on the shaft I64.

The small knob I68 is provided with a single projecting pointer I10 adapted to register with a scale I1I, see Figs. 3 and 16, for indicating the rotative positions of the shaft I64. The scale I1I has the numbers 1 to 4 alternately arranged with four zeros. In the normal position, the pointer I10 is aligned with one of the zeros, as shown in Figs. 3 and 16, to indicate that none of the fingers 61 and respective ratchet wheels 68 is inoperative for bolt locking purposes. In the event one of the ratchet wheels 68 becomes inoperative for some reason, and for the sake of illustration let us assume it is the ratchet wheel controlled by the push button I02 or pull button I05 identified by the numerals 3 in Figs. 1 and 2, the small knob I66 is then turned until its pointer I10 registers with the numeral 3 on the scale I1I. This rotates the shaft I64 and turns the triangular projection I68 beneath the number 3 ratchet wheel into a position to bear against the side of the depending arm I69 of the number 3 ratchet wheel rotating the corresponding sleeve 6I against the action of its respective spring 64 and moves the free end of the respective finger 61 clear of the periphery of the number "3 ratchet wheel 68 rendering that finger 61 and related ratchet wheel 68 inoperative for bolt locking purposes.

A flexible leaf spring I12, see Figs. 5 and 1'1, is fixedly mounted on the inside face of the side wall of the casing 50 by several pins I13. The

bottom end of the leaf spring I12 is free and formed with a knob I14 which is adapted to snap into and out of any one of eight cutouts I15 formed evenly about the periphery of a flange I16 fixedly mounted on the shaft I64. Thus, the knob I14 when engaged with the cutouts I15 is adapted to hold the shaft I64 in any one of eight rotative positions corresponding to the four operative positions of the triangular projections I68 and the four inoperative positions of those triangular projections I68.

The present invention also includes a novel key mechanism for locking and unlocking the bolt 52 of the lock, and it is pointed out that the operation of this key mechanism is dependent upon rendering the push button mechanism inoperative for bolt locking and unlocking purposes. This means that in order to use the key mechanism for locking the bolt 52, the push button mechanism must be operated in accordance with the predetermined combination, as will become clear as this specification proceeds, for turning the ratchet wheels 68 to the positions in which the cutout portions 14 are aligned with the free ends of the fingers 61 so that the bolt 52 is free to move laterally of the casing 50 with the free ends of the fingers 61 passing through the cutouts 14. Also, the lever I39 must be pivoted to the full line position behind the circular flange I44 on the door knob rod I32 so that the rod cannot be moved longitudinally to disengage the dogs I25 from their engaged positions with the peripheral teeth of the ratchet wheels 68 freeing the ratchet wheels 68 to be returned, by the coil springs 80, to their starting positions in which i3 their cutout portions 19 are disalign'ed with the free top ends of the fingers 61-.

The key mechanism includes a bar I'll, see Fig. 8, slidably mounted on the inside face of the plate 53 by several spaced brackets I18. The top edge of the bar Ill rides back and forth beneath the bottom edges of the push button rods 99 and is formed with several hooks I19. There is one hook I79 for each of the push button rods 99 and the free endsof these hooks, in'lateral shifted position of the bar III, are adapted to engage into small openings I89'formed in the sides of the respective push button rods 99. When the hooks I19 are engaged within these openings I89, they secure the push button rods 99 against possible longitudinal movement for causing the rotation of the ratchet wheels 50, as previously described, to disalign the cutout portions M of the ratchet wheels from the free upper ends of the fingers 6?. Normallyfwhen the key mechanism is not in operation the hooks I79 are disengaged from the openings I89 leaving the push button rods 99 free to be moved longitudinally for opening the look when the same is locked by the push button mechanism.

Below the bar Hi, there is a second bar ISI which is round in cross-section and also slidably and rotatively supported by the bearings I'Iii. This second bar I9I is formed with spaced depending fingers I82 extended along the sides of the flanges I23 of the rings 8!.

Adjacent one end, the circular bar I9I has a ring I89 rotatively engaged thereabout and held against longitudinal movement by a pair of pins I39 extending from the side of the circular bar am. The top of the ring I83 is formed with an upwardly extending flange I85 riveted to the bar IT? for securing the bars Ill and I9I together for simultaneous longitudinal movement. A stop I85 extends upwards from the circular bar It! and bears against the bar IT? for limiting rotation of the circular bar I81 in one direction. A contraction spring I8? operates between one of the pins I84 of the circular rod Hit and a lug I83 mounted on the top wall of the casing 59-for retaining the circular bar I8I in a rotation position in which the stop I85 bears against the bar Ill and in which the fingers I92 will be in their proper extended position with relation to the flanges I29 of the rings BI.

An arm I89 is extended downward from the ing I99 and a contraction spring I89 operates between a lug I99 extending from that arm I39 and a second lug I9I mounted on the side wall of the casing 59 for urging the bars It? and I83 into the longitudinal inoperative position shown in 8.

One end of the circular bar IBI is formed with a reduced extended portion I86 rotatively and slidably extended through the side wall of the casing. 59. The outer end of the reduced portion idl is provided with a knurled knob I92 which is adapted to be manually gripped for first rotating the circular bar I8I against the action of the spring I to move the fingers I92 clear of the periphery of the flanges I23 so that the bars I'S'I and ISI may then be moved longitudinally, by pushing in on the knob I92, to engage the hooks IE9 into the openings in the sides of the push button rods 99 and to locate the fingers I82 operatively on the other side of the flanges I23. Upon completion of longitudinal movement, the knob I92 is freed for rotative movement while still holding the same pushed inwards, allowing the spring IE? to rotate the circular bar IB-I back until the stop I86 strikes the: bar IIfIl locating the fingers I02 on the opposite side of the flanges I2 9. The knob I92 is then released, but the spring 599 is then inoperative for drawing the bars I" and Hit back to their starting position because of the engagement of the fingers I82 on the opposite sides of the flange I23 from that shown in Fig. 8.

The lower end of the arm I88: carries a depending finger I93 which is pivotally attached at its topend to the lower end of the arm I88 by means or a pivot pin I94. The arm I95. is further formed with a stop I95 which engages one side of the depending finger I99 and a leaf spring. I95 having one end secured to the side of. the arm Isis'has its free end bearing against the opposite side of; the finger. I93- holding the finger I93 in a normal pivoted position aligned with the arm its and hearing against the stop I95.

A bracket I91 extends from the side wall of the, casing 50 and pivotally supports a. keeper I 98. The keeper I 98 is formed with a slot I99 in which. the lower end of the finger I93 extends and the keeper I98 is further formed with a keeper notch 259 which is adapted to engage be hind the end of the adjacent endmost sleeve 6I. as shown in Fig. 25, for locking the bolt 52in a position in which the rectangular portion '52 will be operatively extended from the opening 59 in the sidewall of the casing 50. Movement of the bars I77 and I SI longitudinally against the ac,- tion of the spring I89 merely pivots the finger I 93 relative to the arm I 89 and loads the leaf spring I96 to pivot the finger I93 back to its starting position and pivot the keeper I98 from the inoperative position show-n in Fig. 24 to the op,- erative position shown in Fig. 25. The keeper I 98 is freed to be moved to the operative position by the leaf spring I95 through the medium of the finger I93 only after the door knob rod I32 has been turned to turn the gear I 38 and extend the bolt 52 into a position in which its rectangular portion 52 is extended from the opening 59. This movement of the bolt 52 also moves the sleeves 9I moving the endmost sleeve 6I clear of the side of the keeper I98 so the keeper may pivot to cause the end of the sleeve BI to be engaged within the keeper notch 200 holding the bolt 52 in its extended position against the pull of the spring I0.

Means operative by insertion of a key 20 I' from the outside of the door 5i, is provided for moving the keeper I98 clear of the sleeve 6| with which it is engaged for freeing the bolt 52 to be retracted into the casing 50 by the spring I0for purposes of unlocking the door. This key operated means comprises a half collar 202 secured to each of the rings 8| by rivet secured lugs 203. The half collars 292 extend about the spur gears and related parts and having projections 204 extending from the sides thereof, see Figs. 10 and 11. Each of the flanges I29 is formed with a slot 295 and the slot 205 of each adjacent flange I23 is spaced further away from its respective finger I82, as shown in the diagrammatic view, Fig. 19. A tubular cylinder 206 extends into the square portion 50 of the casing 50 from the tubular boss I00 and slidably supports a plurality of plungers 29?, one for each of the half collars 292. The

'plungers 20? have their free ends disposed adjacent the projections 204 of the half collars 202 and are retained in retracted positions within the cylinder 206 by springs 201 The key 20I has staggered portions 20 angularly ofise't'and the key hole opening 290 in the tubularboss I00 15 leading to the interior of the cylinder 206, has similar ofiset portions so as to receive the offset portions 20 I of the key 20 I. Within the cylinder 208 the ends of the plungers 201 are all flush and the mere act of inserting the key 20I will extend the plungers 201 the proper amount to rotate the rings 8I relative to the ratchet wheels 68 through the medium of the half collars 202 to align the slots 205 of all of the flanges I23 with their respective fingers I 82 freeing the bars I11 and I8I to be drawn back by the spring I89. Simultaneously, the keeper I98 will be pivoted clear of the end of the sleeve BI freeing the bolt 52 to be retracted into the casing 50 by the spring I0.

Movement of the rings 8| to align the slots 205 of the flanges I23 with the fingers I82, did not rotate the ratchet wheels 08 because the spur gears 85 were not locked against rotation by the latch members 90 and so the spur gears 85 merely idled over the teeth I3 of the ratchet wheels 68, while those ratchet wheels remained perfectly stationary. To free the bolt 52 from the inside of the door 5I, when locked by the key mechanism, it is merely necessary to manually rotate the knob I92 against the action of the spring I8'I to move the fingers I82 beyond the periphery of the flanges I23 freeing the bars I11 and I8I to be drawn back by the spring I89.

Means is provided for quickly releasing the bolt 52 when locked by either the push button mechanism or the key mechanism, from the inside of the door, to permit the door to be quickly opened from the inside in cases of emergency such as during a fire or other times when it is necessary to quickly pass through the door 5I.

The quick releasing means is characterized by a rod 209 slidably supported at its ends for horizontal movement by guides 2 I formed on the side walls of the casing 50. The rod 209 passes behind the vertically extending fingers 61 and is formed intermediate of its ends with a stem 2 which is slidably extended through an opening formed in the plate 53. The outer end of the stem 2I I is formed with a knob 2 I2, by which the end of the stem 2 can be manually gripped to slide the rod 209 horizontally toward the inside face of the plate 53. This movement of the rod 209 pivots the fingers 6! against the holding action of the springs 64 and moves the top ends of the fingers Bl beyond the peripheral edges of the ratchet Wheels 68, freeing the bolt '52 to be retracted into the casing 50 by the spring "I0.

The rod 209 also includes an upstanding post 2I3 which has its upper end overlapping a depending projection 2I4 formed on the circular bar I8I, so that when the knob 2I2 is pulled for horizontally sliding the rod 209 it will move the upstanding post 2I3 to move the projection 2I4 and rotate the circular bar I8I against the holding action of the spring I81 and move the fingers I82 on the circular bar I8I free of the flanges I23 and in turn releasing the bolt 52 to be retracted into the casing 50 by the spring I0, in the event the bolt is locked in its extended position by the key mechanism.

It is appreciated that the rod 209 and associated mechanism may also be used for opening the look from the inside of the door I under normal conditions rather than by manipulating the pull buttons I05 or turning the knob I92.

The operation of the present invention is as follows:

For the purpose of illustration let us first assume that the lock is closed by the push button mechanism and that the ratchet wheels 68 are mounted on the shaft 69 in such position that the combination for releasing the bolt 52 is 12, 3, 5 and 15, these numbers correspond respectively to the push buttons I02 identified by the numerals 1, 2, 3 and 4 in Fig. l and the pull buttons I05 identified by the numerals l, 2, 3 and 4 in Fig. 2. Assume that the person wishing to open the lock is on the outside of the door. The person first presses twice on the low part I04 of the push button I82 identified by the numeral 1 to advance the respective ratchet wheel 68 ten teeth and then pushes twice on the high part I03 of that push button to advance the ratchet wheel 68 the required additional two teeth to align its cutout portion I4 with the top end of the respective finger 61. The high part I03 of the push button I02 identified by the numeral 2 is then depressed three times to align the cutout portion I4 of the respective ratchet wheel 68 with the top end of the respective finger 61. Next, the push button I02 identified by the numeral 3 is pressed on its low part I04 once to advance the respective ratchet wheel 68 five teeth and align the cutout portion of that ratchet wheel with the top end of its respective finger 61. Finally, the push button I02 identified by the reference numeral 4 is operated. That push button is pressed on its low part I04 three times to advance the respective ratchet wheel 68 fifteen teeth and align its cutout portion I4 with the top end of the respective finger 61.

The cutout portions I4 of all of the ratchet wheels 68 will now be aligned with the top ends of the respective fingers 61, so that the top ends of the fingers will pass through the cutout portions I4 as the spring I0 acts to automatically draw the bolt 52 into a retracted position within the casing 50 withdrawing its rectangular portion 52 from the keeper (not shown) freeing the door to be opened. If the door is to be opened from the inside, when locked by the push button mechanism, the same procedure is followed, except that the pull buttons I05 are pulled for advancing the ratchet wheels 68 the desired number of teeth. It being understood that the pull buttons are pulled until the flanges I08 strike the inside face of the plate 53 to advance the ratchet wheels 68 five teeth, and that it is necessary to depress the finger portions II3 to pivot the levers IIO against the action of the springs II4 to extend the stops II2 from the recesses I09 if it is desired to advance the respective ratchet wheels 68 one ratchet tooth. In the extended positions of the stops I I2, the stops will strike the inside face of the plate 53 and retain the pull buttons I05 against further outward movement.

In order for the push button mechanism to operate properly it is necessary that all of the ratchet wheels 68 be at their starting positions; that is, with the lugs 79 of the ratchet wheels 60 engaging the lugs I8 of the stops 16, as shown in Figs. 6 and 9. Therefore, before manipulating any of the push buttons I02 or pull buttons I05, it may be necessary to longitudinally slide the door knob rod I32 to pivot the U-shaped bracket I35 which in turn pivots the dogs I25 against the holding action of the spring I30, thus freeing the ratchet wheels, which may have been turned from their starting position, to be turned back to their starting positions by their respective coil springs 80.

To relock the door with the push button mechanism after having been opened. the door 5I is first swung to a closed position about its supporting hinges (not shown) and the door knob rod I32 is rotated to fully extend the bolt 52,

from the casing 50 and engage its rectangular end 52 into the keeper (not shown). This movement of the bolt 52 against the action of the spring I moves the ends of the fingers 51 back through the cutout portions 14 of the ratchet Wheels 68. In this rotated position, the door knob rod I32 is moved longitudinally to move the fanshaped member I31, which is shaped to engage behind the U-shaped bracket I35 in the turned positions of the. door knob rod I32, which in turn pivots the U-shaped brackets I35. The U-shaped brackets I35 in turn pivot the dogs I25 against the action of the spring I30 and free the ratchet wheels 68 to be returned to their starting positions by the coil springs 80.

To operate the look when closed by the key mechanism, it should be remembered thatall of the ratchet wheels 68 were turned to the positions in which their cutout portions I4 are aligned with the topends of the fingers 51,, so that these fingers 61 will not interfere with the operation of the. bolt. 52. Also, the lever I39 has been pivoted to the full line position shown in Fig. 18, behind the circular flange I44 on the door knob rod I32, so that the rod cannot be moved longitudinally to pivot the. dogs I25 and free the ratchet wheels 68 to be returned to their starting position by the coil spring, 00. This. engagement of the lever I39 behind. the flange. I44 does not, however, interfere withrotative movement of the door knob rod I32.

If the lock is locked with the key mechanism and the person desiring to open the lock is out side of the door he merely inserts the'key' I into the key hole opening 208. This act properly extends the plunger 201 against the holding action of the springs 207 from the inner end of the cylinder 205. These plungers 201 bear against the projections 204 on the sides of the half collars 202 and rotate the rings 8| with. the half collars 202 against the holding action of the springs I20. This automatically aligns all of the slots 205 of the flanges I23 with'the fingers I82 of the bar IBI. Immediately, the bars Ill and I 8| are free to be urged laterally to the right in Fig. 8, by the spring I89. Instantly, the keeper I98 is pivoted to disengage its keeper notch 200 from behind theendmost sleeve 9I freeing. the bolt 52 to be retracted into the casing 5|- by the spring 10.

To relock the look by the. key mechanism, the person within the room, on the inside of the door 5|, first turns the knob I92 against the action of the spring I81 to move the fingers I82 on the circular bar I8I free of the periphery of the 1 fianges I23, which now have their slots 205 disaligned with the fingers I82. When the fingers I32 have cleared the periphery of the l8 movement of the bars I I1 and I 8| pivoted the depending finger' I93. about its pivot pin I94 and loaded the leaf spring I96. The person leaves the room and pivots the door to a closed position about its supporting, hinges and from. the outside of the door turns the door knob'rod I32 to extend the bolt 52 against the holding action of. the spring I0. As the end of the endmost sleeve 6| moves clear of the keeper I98, the loaded leaf spring I 96 will immediately straighten out the depending finger I93 and pivot the keeper I98 to engage the keeper notch 200 behind the endmost sleeve 0I securing the bolt in its extended positions. I v

In the modification of the invention'disclosed in Figs. 28 to 30,- the construction of the lock is similar to that previously described, differing merely in the construction and operation of the push button mechanism.

In this modified form of the invention, the push button, rods 99 of the number 3 and 4" push buttons I02 and pull buttons I05 are connected together for unitary movement by a tie rod. 220 secured to the push button rods 99' by rivets 22I. If desired, thetie rod-229 could be integrally formed with the, push button rods 99. The push button rods 99 of the number l and "2 push buttons I02 and pull buttons I05 are the same as the push button rods in the previous form of theinvention.

Also, in this form of the invention, the dogs I25 of the number "2" and "3 ratchet wheels 98 are. formed with integral tubular portions 222 which are rotatively engaged about the supporting rod I24. These dogs I25 are retained in aligned positions with their respective ratchet wheels 58 and against longitudinal movement on the rod I24 by means of pins 223 mounted through the tubular portions 222 and which engage in circular grooves 224 cut'in the supporting rod I24. The tubular portion 222 of the dog I 25. of the number 2 ratchet wheel 58 is formed with a lug 225 which extends toward and overlaps a lug 226 which is formed on the tubular portionv 222 of the dog I25 of the number 3 ratchet wheel 68. These lugs are so arranged that when the number 3 ratchet wheel 90 is advanced causing its dog I25 to pivot, due to the action of the teeth I21 of the dog snapping over the teeth on the periphery of the ratchet wheel 58, the lug 226 on'the tubular portion 222 of that number 3 dog merely moves away from the lug 225 on the tubular portion 222 of the number 2 dog I25. However, the reverse is true when the number 2 dOg l25' is pivoted by rotation of the number 2- ratchet wheel 58. In that case.

the lug 225 of the tubular projection 222 of the number 2 dog I25 will strike the lug 226 of the number 3 dog I25 and pivot the number 3 dog to free the number 3 ratchet wheel 63 to be returned to its starting position by its respective coil spring 80. 7

The operation of this modified form of the in vention isv as follows:

Assume that the combination for opening the look by the push button mechanism is 12, 3, 5

I98 is held against pivoting by the endmost sleeve GI on the bolt 52. However, longitudinal and, 6.. To open the lock the number 3 or 4 push button I02 or pull button I05 is first manipulated-either can be used as. the number 3" and 4 push button rods 99'are connected together for unitary movement- 60 advanoethe number 3 and 4 ratchet wheels 58 one tooth. The operator then moves to the number 2" push button I02 or pull button I05 and manipulates the same to advance the number 2" ratchet wheel 68 three teeth. Upon the first manipulation of either the number "2 push button I02 or pull button I05, the number 2 dog I25 was pivoted against the action of the spring I30 and its lug 225 bearing against the lug 22B of the tubular portion 222 of the number 3 dog I25 also pivoted that latter dog and freed the number 3 ratchet wheel 68 to be returned to its startin position by its respective coil spring 80. The operator then returns to the combined number 3 and 4 push button- I02 and pull buttons I05 and operates either to advance the number 3 and 4 ratchet wheels five teeth. As the number 4 ratchet wheel 68 still retains its one tooth advance from the first manipulation of the combined number 3 and 4 push buttons I02 and pull buttons I05, this number 4 ratchet wheel will have been advanced a total of six ratchet teeth to align its cutout pOrtion 14 with the top end of the respective finger 61. The one tooth advance of the number 3 ratchet wheel 88 had been erased by the operation of the number 2 ratchet wheel 68, so that the number 3 ratchet wheel 68 has been advanced a total of five ratchet teeth to align its cutout portion I4 with the top end of its respective finger 61.

The operator then turns to the number 1 push button I02 or pull button I05 and operates either to advance the respective number 1 ratchet wheel 68 a total of twelve ratchet teeth to align the cutout portion of that number 1" ratchet wheel 68 with the top end of its respective finger 61. This completes the alignment of the cutout portions I4 of the ratchet wheels 68 with the top end of the fingers 61 and frees the bolt 52 to be retracted into the casing 50 by the spring 10.

In illustrating this form of the invention, the number 3 and 4 push button rods 99' are shown connected by the tie rod 220; however it is pointed out that any two adjacent push button rods could be chosen for connection in the manner outlined.

In other respects this form of the invention is similar to the first form and like reference numerals identify like parts in each of the several views.

It is apparent from the foregoing description that a novel lock mechanism is proposed which may be selectively operated by either the push button mechanism or the key mechanism, and one which will have a great number of different combinations for operation by the push button mechanism and which combinations may be quickly changed by the owner of the lock for the purpose of excluding persons who at one time were rightfully in possession of the combination.

While I have illustrated and described the pre-- ferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claims.

Having thus described my invention, what I claim as new, and desire to secure by United States Letters Patent is:

1. A look, comprising a casing, a bolt slidably extended through said casing, a shaft supported within said casing parallel to said bolt, ratchet wheels rotatively supported on said shaft, stops limiting rotation of said ratchet wheels in one 20- toward said stops, fingers extended substantially vertically from said bolt and having free ends along one side of said ratchet Wheels for retaining said bolt in a position extended from said casing, said ratchet wheels being formed with cutout portions alignable with the free ends of said fingers through which said free ends pass in the aligned positions of the cutout portions, and push button mechanism for individually advancing said ratchet wheels to align the cutout portions thereof with the free ends of said fingers, said shaft being formed of separate sections in end alignment and having a group of said ratchet wheels on each section, means rotatively supporting the adjacent ends of said sections, and means for holding said sections in relative rotati've positions for changing the relative disposition of the cutout portions of the ratchet wheels of each shaft section and the free ends of the respective fingers.

2. A lock, comprising a casing, a bolt slidably extended through said casing, a shaft supported within said casing parallel to said bolt, ratchet wheels rotatively supported on said shaft, stops limiting rotation of said ratchet wheels in one direction only, means biasing said ratchet wheels toward said stop, fingers extended substantially vertically from said bolt and having free ends along one side of said ratchet wheels for retaining said bolt in a position extended from said casing, said ratchet wheels being formed with cutout portions alignable with the free ends of said fingers through which said free ends pass in the aligned positions of the cutout portions, and push button mechanism for individually advancing said ratchet wheels to align the cutout portions thereof with the free ends of said fingers, said shaft being formed of separate sections in end alignment and having a group of said ratchet wheels on each section, means ro-- tatively supporting the adjacent ends of said sections, and means for holding said sections in i''Iative rotative positions for changin the relative disposition of the cutout portions of the ratchet wheels of each shaft section and the free ends of the respective fingers, and means on said shaft sections for indicating the relative rotative positions thereof.

3. A lock, comprising a casing, a bolt slidably' extended through said casing, a shaft supported within said casing parallel to said bolt, ratchet wheels rotatively supported on said shaft stops limiting rotation of said ratchet wheels in one direction only, means biasing said ratchet wheels toward said stops, fingers extended substantially vertically from said bolt and having free ends alone one side of said ratchet wheels for retaining said bolt in a position extended from said casing, said ratchet wheels being formed with cutout portions alignable with the free ends of said fingers through which said free ends pass in the aligned positions of the cutout portions, and. push button mechanism for individually advancing said ratchet wheels to align the cutout per-- tions thereof with the free ends of said fingers, said shaft being formed of separate sections in end alignment and having a group of said ratchetwheels on each section, means rotatively sup-- porting the adjacent ends of said sections, and means for holding said sections in relative rotative positions for changing the relative disposition ofthe cutout portions of the ratchet wheels of each shaft section and the free ends of the respective fingers, said holding means comprises a direction y. means sing said ratchet whegls gear on; each of, said shaft sections and a cam 21 operated plate for each gear having a tooth engageable between adjacent teeth of the respec tive gear.

4. A lock, comprising a casing, a bolt slidably extended through said casing, a shaft supported within said casing parallel to said bolt, ratchet wheels rotatively supported onv said shaft, stops limiting rotation of said ratchetv wheels in one direction only, means biasing said ratchet. wheels.

toward said stops, finger extended substantially vertically from said bolt and having free ends along one side of said ratchet wheels for retaining said bolt in a position extended. from said casing, said ratchet wheels being formed with cutout portions alignable with the free ends of said fingers. through which said free ends pass in the. aligned positions of the cutoutportions, and push button mechanism for individually ad vancing. said ratchet wheels to align the cutout portions thereof with the free ends. or said fingers,v sleeves rotatively supported on said bolt one for each of said fingers and from which said fingers extend vertically, pins extended through said bolt retaining said sleeves against longitudinal movement, lugs projecting from said sleeves: to abut the adjacent ends of said pins, and springs operating between said pins and said lugs retaining said sleeves in a rotative position inwhich said. lugs engage said pins and the free ends of said fingers extend along the sides or said ratchet wheels.

5. A lock, comprising a casing, a bolt slidably extended through said casing, a shaft supported within said casing parallel to said bolt, ratchet wheels rotatively supported on said shaft, stops limiting rotation of said ratchet wheels in one direction only, means biasing said ratchet wheels toward said stops, fingers extended substantially vertically from said bolt and having free ends along one side of said ratchet wheels for retaining said bolt in a position extended. from said casing, said ratchet wheels being formed with cutout portions alignable with the free ends of said fingers: through which said free ends pass in the aligned positions of the cutout portions, and push button mechanism for individually advancing said ratchet wheels to align the cutout portions thereof with the free ends of said fingers, sleeves rotatively supported on said bolt one for each of said fingers and from which said fingers extend vertically, pins extended through said bolt retaining said sleeves against longitudinal movement, lugs projecting from said sleeves to abut the adjacent ends of said pins, and springs operating: between said pins and said lugs retaining said sleeves in a rotative position in which said lugs engage said pins and the free. ends or" said fingers extend along the sides of said ratchet wheels, and manually controlled means for rotating any one of said sleeves against the holding action of said springs to move the free. end of the respective. finger beyond the periphery of the respective ratchet wheel rendering the respective finger inoperative for bolt locking purposes.

6-. A look, comprising a casing, a bolt slidably extended through said casing, a shaft supported within said casing parallel to said bolt, ratchet wheels rotatively supportedon said shaft, stops limiting rotation of said ratchet wheels in one direction only, means biasing said ratchet wheels toward said stops, fingers extended substantially vertically from said bolt and having free ends along one side of said ratchet wheels for retaining said bolt in a position extended from said casing, said ratchet wheels being formed with cutout portions alignable with the free ends of said fingers through which said free ends pass in the aligned positions of the cutout portions, and push button mechanism for individually advancing said ratchet wheels to align the cutout portions thereof with the free ends of said fingers, sleeves rotatively supported on said bolt one for each of said fingers and from which said fingers extend vertically, pins extended through said bolt retaining said sleeves against longitudinal movement, lugs projecting from said sleeves to abut the adjacent ends of said pins, and springs operating between said pins and said lugs retaining said sleeves ina rotative position in which said lugs engage said pins and the free ends of said fingers extend along the sides of said ratchet wheels, and separate key operated mechanism for locking the bolt in an extended position in the rotative position of said ratchet wheels in which their cutout portions are aligned with the free ends of said fingers.

7. A look, comprising a casing, a bolt slidably extended through said casing, a shaft supported within said casing parallel to said bolt, ratchet wheels rotatively supported on said shaft, stops limiting rotation of said ratchet wheels in one direction only, means biasing said-ratchet wheels toward said stops, fingers extended substantially vertically from said bolt and having free ends along one side of said ratchet wheels for retaining said bolt in a position extended from said casing, said ratchet wheels being formed with cutout portions alignable with the free ends of said fingers through which said free ends pass in the aligned positions of the cut-out portions, and push button mechanism for individually advancing said ratchet wheels to align the cutout portions thereof with the free ends of said fingers, sleeves rotatively supported on said bolt one for each of said fingers and from which said fingers extend vertically, pins extended through said bolt retaining said sleeves against longitudinal movement, lugs projecting from said sleeves to abut the adjacent ends of said pins, and springs operating between said pins and said lugs retaining said sleeves in a rotative position in which said lugs engage said pins and the free ends of said fingers extend along the sides of said ratchet wheels, and separate key operated mechanism for locking the bolt in an extended position in the rotative position of said ratchet wheels in which their cutout portions are aligned with the free ends of said fingers, and means controlled by said key operated mechanism for holding said push button mechanism inoperative to rotate said ratchet wheels when the bolt is secured in its extendedposition by said key operated mechamsm.

8. A look, comprising a casing, a bolt slidably extended through said casing, a shaft supported in said casing parallel to said bolt, a plurality of rings rotative on said shaft, radially extending flanges formed on said rings and having staggered slots, a slidably mounted bar having fingers engageable along one side of said flanges, means controlled by movements of said bar and terminating in a keeper engageable behind a portion of said bolt for securing the same in an extended position, and key operated plungers controlling rotation of said rings to align their cutouts with said. fingers freeing said bar for movement in a direction to withdraw said keeper from its operative engagement with said portion of said bolt.

9.- A lock, comprising a casing, a bolt slidably extended through said casing, a shaft supported in said casing parallel to said bolt, a plurality of rings rotative on said shaft, radially extending flanges formed on said rings and having staggered slots, a slidably mounted bar having fingers engageable along one side of said flanges, means controlled by movements of said bar and terminating in a keeper engageable behind a portion of said bolt for securing the same in an extended position, and key operated plungers controlling rotation of said rings to align their cutouts with said fingers freeing said bar for movement in a direction to withdraw said keeper from its operative engagement with said portion of said bolt,

said rings being resiliently retained in operative engagement with said key operated plungers.

16. A lock, comprising a casing, a bolt slidably extended through said casing, a shaft supported in said casing parallel to said bolt, a plurality of rings rotative on said shaft, radially extending flanges formed on said rings and having staggered slots, a slidably mounted bar having fingers engageable along one side of said flanges, means controlled by movements of said bar and terminating in a keeper engageable behind a portion of said bolt for securing the same in an extended position, and key operated plungers controlling rotation of said rings to align their cutouts with said fingers freeing said bar for movement in a direction to withdraw said keeper from its operative engagement with said portion of said bolt, said keeper being pivotally supported and said control means includes a depending finger engaging a slot in said keeper formoving said keeper between operative and inoperative positions.

11. A lock, comprising a casing, a bolt slidably extended through said casing, a shaft supported within said casing parallel to said bolt, ratchet wheels rotatively supported on said shaft, stops limiting rotation of said ratchet wheels in one direction only, means biasing said ratchet wheels toward said stops, fingers extended substantially vertically from said bolt and having free ends along one side of said ratchet wheels for retaining said bolt in a position extended from said casing, said ratchet wheels being formed with cutout portions alignable with the free ends of said fingers through which said free ends pass in the aligned positions of the cutout portions, and push button mechanism for advancing said ratchet wheels to align the cutout portions thereof with the free ends of said fingers, and pivotally mounted dogs for holding said ratchet wheels in rotative position away from said stops, said push button mechanism including a longitudinally movable push button rod for each of said ratchet wheels, means connecting together an adjacent pair of said push button rods to uniformly rotate the respective ratchet wheels when either of said connected pair of push button rods is moved longitudinally, and means interconnecting the dog of one of the ratchet wheels of the interconnected pair of push button rods and the dog of an adjacent ratchet wheel to pivot the dog of the said ratchet wheel of the interconnected pair to free that ratchet wheel when the latter-mentioned ratchet wheel is advanced against the action of its respective retaining means.

12. A lock, comprising acasing, a bolt slidably extended through said casing, a shaft supported within said casing parallel to said bolt, ratchet wheels rotatively supported on said shaft, stops limiting rotation of said ratchet wheels in one direction only, means biasing said ratchet wheels toward said stops, fingers extended substantially vertically from said bolt and having free ends along one side of said ratchet wheels for retaining said bolt in a position extended from said casing, said ratchet wheels being formed with cutout portions alignable with the free ends of said fingers through which said free ends pass in the aligned positions of the cutout portions, and push button mechanism for advancing said ratchet wheels toalign the cutout portions thereof with the free ends of said fingers, and pivotally mounted dogs for holding said ratchet wheels in rotative position away from said stops, said push button mechanism including a longitudinally movable push button rod for each of said ratchet wheels, means connecting together an adjacent pair of said push button rods to uniformly rotate the respective ratchet wheels when either of said connected pair of push button rods is moved longitudinally, and means interconnecting the dog of one of the ratchet wheels of the interconnected pair of push button rods and the dog of an adjacent ratchet wheel to pivot the dog of the said ratchet wheel Of the interconnected pair to free that ratchet wheel when the latter-mentioned ratchet wheel is advanced against the action of its respective retaining means, said push button rods having their one ends extended in a circle from one side of said casing, a circular boss formed on the said one side of said casing concentric with said push button rods, each of said push button rods having its outer end shaped to have a high part aligned with said boss and a low part positioned radially outward from said boss, so arranged and constructed that finger pressure on either of said parts will cause the push button rods to be pressed inward different amounts to vary the rotative movement of the respective ratchet wheels.

13. A lock, comprising a casing, a bolt slidably extended through said casing, a shaft supported within said casing parallel to said bolt, ratchet wheels rotatively supported on said shaft, stops limiting rotation of said ratchet wheels in one direction only, means biasing said ratchet wheels toward said stops, fingers extended substantially vertically from said bolt and having free ends along one side of said ratchet wheels for retaining said bolt in a position extended from said casing, said ratchet wheels being formed with cutout portions alignable with the free ends of said fingers through which said free ends pass in the aligned positions of the cutout portions, and push button mechanism for ad vancing said ratchet wheels to align the cutout portions thereof with the free ends of said fingers, and pivotally mounted dogs for holdin said ratchet wheels in rotative position away from said stops, said push button mechanism including a longitudinally movable push button rod for each of said ratchet wheels, means connecting to gether an adjacent pair of said push button rods to uniformly rotate the respective ratchet wheels when either of said connected pair of pushbutton rods is moved longitudinally, and means interconnecting the dog of one of the ratchet wheels of the interconnected pair of push button rods and the dog of an adjacent ratchet wheel to pivot the dog of the said ratchet wheel of the interconnected pair to free that ratchet wheel when the latter-mentioned ratchet wheel is advanced against the action of its respective retaining means, said push button rods having their one ends extended in a circle from one side of said casing, a circular boss formed on the said one side of said casing concentric with said push 

